official auto sales John paul automobile fraud plaistow New Hampshire

     I bought a 2005 Chevy Trailblazer on May 21,20014 from this car dealership Official Auto Sales. I got it home and the check engine light came on. I brought it to the garage they found that the valves were leaking and that they would need to replace the head and tear down the engine for further diagnosis.When I bought the car the check engine light was not on but I found the failed inspection report from Febuary 20014 for the same problem that I have.I asked John Paul the guy that sold me the car to please take it back and he told me that was never going to happen because I signed an as is contract. My feeling is that if he cleared the check engine light in order to sell the car he is  clearly committing fraud.